High-potential-circuit breaker.



PATENTED AUG. 6, 1907.

' L. G. ROBINSON.

HIGH POTENTIAL GIRGUIT BREAKER.

APi'LIUA'IIOKIILED DBO. 12,1906.

icontaiets are so that a high 4 jarring or" exceasi r-reasingly 1inecessity, and coils of a. very large, egc

; drop across its terminals, so that the efficiency of the f {t,er setiorthias shown for multiplying the voltage of the primary winding to 50.rmy desired extent, at the same time maintaining the ATENT ornron.

NITED ST i- ,flinn onns'rge, ROBINSON, OF PLATTs uRG, NEW YORK.

r rIen-roTEn'rmL-c No. 8d2,5 13

Specification To all when: it I Be it known tliat I, Lssonnsr Ronmsoiz',2'. 't' on of theUnited- State's, residing at -Plsttsburg,* ln county ofClinton and State of New YOl'lQJlflVQiIl ed certain new and ImprovementsPotential-Circuit I -full, clear, and'exactd 'p y ven ion-m1, 1,,end'perteinspertic larly v A iurthernbj tor in consists intheconstructiorfl. I 11,1900; arrnngemcnt of parts, all as will;

m; rmny'pam um claims.

- The drawing illustrates a. circuit-ii e section, which embodies theprinciples of myinvention. In the practice of wireless telegrnphy, motoryehicle 'cquipment, and :rgr eat many other practical indus tries,induction coils of high power are becoming in pensive construction erenow in common use. As is ,well known, the powcrof a coil depends upontwo iactors. the ratio of its primary to ils sccondary windings, end themagnetizing effect of its primary winding.

Within a, given size of wire this umgnetizingcffcct. of

the primary is directly proportional to the potential coil isproportional to such potential drop; In practice, however, very lowpotentials have generally been used in order to avoid sparking at thecontacts, and secure a sullicicnt ahruptness of the primary break. It isevident thnt ii a break could be devised that would he as efliciont asthe present break and work for larger voltages, itwould multiplytheipower oi the coil used in the proportion that theprimnry voltqge ismultiplied. In earrying outnry present invention I provide means somesudderuuus in opening the primary circuit that has hitherto beenobtained. lii'hronking :llternatingcurrent circuits it is especially.neecssarythat-tho rupture he made alrruptlysince other- I wisedangerous oscillations are set up across the pith which jth eiollowingis a M Q IRCUIT BREAKER.

Letters Patent. f Patented Aug. 6, 1907.

ipplioit ton and when; 1905'. '84....1 keratin.

I traversed by theatre drawn when the contacts SUp'd-mtc.

in carrying out nly invention I aim to provide a circuit breaker.adaptedto rupture the circuit within the time of'a single oscillation of analternating current, time drawings and to the various yiews andreference signs appearing thereon in which preventing such danger.Reierringimow to the likefpdrtslaredesigneted. by the same reierencesign I wlierever they ocqu'nldenotesaframe or cashig'which 7 he i i he:ae ni r m s I borsi'aremnd'e oi insulating msiterial dearly-upon theiitspaced epn tec't springs wand 11-,

,which are directed townrd one another so as'to' lap over andmake-contactg tt theinext-remities. The alternste contact springs ofeachseries are connected by conduct straps so..- that when= thei:ontacti'springsare registered or contact position, acontinuouscircuit'isf formed in a zig-zag path through esch oi the and.

contact springs of the entire series. The end'cdntact designated as 10and 10 upon the drawing arcelcctrf ally connected by any suitable means,as by flexible wires 13, with terminal studs 14, 15, which extendthrough the walls of the casing to any desired binding ,posts on theoutside thereof.

16 designate links which connect the respective rocker bars, and serveto additionally'guide and support the same. The operation is as follows:The terminal wires be i'ng connected to the studs 146ml 15, the solenoid8 is I energized so as to depress its end of the lover 'Z'end rnoye therocker bars'intothe position shown in :the

drawing in which a continuous circuit is formed from one, terminal studto the other as shove described.

When now the solenoid 8 is energized, the layer 7 is oscillated to itsalternate position so that thorocker bars 2 and 3 move relatively to oneanbther'with 'r'heir' attached contact springs 10 and 11 whichaccordingly become separated at their ends along the entire length ofthe series. The circuit is, therefore, broken at a multitude of points,each offwhich operates with as much efficiency the single circuitbreaker commonly in use, so that voltages may be employed which areasmany times greater than the usual yoltages as thenuniher of contactsprings used. As above'stated oilor comprcssedair or (my otherinsulating medium may be employed within the receptacle 1 and acondenser .01.

condensers may .be used to minimize the spark in the usual way.

' While I have referred to my inventionas capableoi' use with inductioncoils and similar apparatus, I do not,

of course, desire to he limited-or restricted to this use, since theinvention is of value as a circuit breaker in all relations where it isdesired to interrupt ahigh potential circuit in a vibratory or in apermanent manner. By the use of the solenoidsii, 8, I am enabled tooperate the circuit h'reaker' at it"remote station or point, and breakcircuits of high potential jthereat without the use of motors or circuitbreaking machinery of any sort; 1

When this device is used as atvihrator for an induction coil, orsimilaizpurpose, it is evident that the movement of the contact springsis divided between the two bars so that each requires only a very slightmovement in order to make an efficient break. The. movement for the entireseriea of corirse,.no greater than for any single Contact spring,sothat the inertia of the mechanicaliy moving parts is no greater, andpossibly even less,

than that of the usual circuit breaker employing-a single movablecontact. in this way a. multiple break is imposed in the gfirizui'twhoseaggregnte length is many times that of a sing e contact circuitbreaker, and at the same time the inertia of the vibrating parts isabout the same. It is ohvi ous that if a gap of the 'one position of thecuit breaker would require 16 times 16, or 256 times as much power as isrequired by this new device.

What I claim, is:

1. A circuit breaker comprising two series of contact springs eachmounted on a support, means for vibrating said supportsln oppositedirections simultaneously so as to break the circuit at a plurality ofpoints, therupture at each point being accomplished with. twice thevelocity of each otsald burs.

2. A circuit breaker comprising a pair of )nsulating bars, a pluralityof contact springs mounted on each bir'n'siiid contact springs beingdirected toward one another and capable 0! making electrical contactwith one another at bars, electrical connections between said spriugs bywhich they are all connected in a single series circuit whe they are incontact with one another,

rocker arms tor supporting said bars, a casing surrounding said rockerarms and lneloslng, the pars, said casing contalnlng fluid underpressure, and means for tilting the r'ocker arms whereby thecoutactspringsnre slmultsne- ,o usly separated. throughout tiie series:

3. A circuit breaker comm-icing ii pair ot insulating liars rock armsfor supporting said bars and imparting a relative movement thereto, andtwo series 0! contact sprlngs respectively joined to the bars soars tomake and break contact with one another when the bars are moved. 4.Acircuit breaker comprising a pair or insulating bars, a rock arm formovably supporting said burs, insulators having grooves forgulding.sald. bars, and contact springs connected to the'respeciive barsso as to break contact with one another when the liars are moved.

5. A. circuit breaker comprising a pair of insulating hers, a rock armtor'movuhly supporting said bars, insulators having grooves for guidingsaid bars, and contact'sprlugs connected to the respective burs so as tobreak contact with one another when the bars are moved, said contactsprings being joined in a single circuit.

In witness whereof, I subscribe my signature, in the presence of twowitnesses.

LAFORESL G. ROBINSON.

Witnesses PAunCnEnVs-n,

Waurnn 13. Gone,

